HYDRO23186

• Permit No: C1994082
• IBM Index Class Name: Hydrology
• Doc Date: 1/26/2004
• Doc Name: 4th Q 2003 Pond Inspections
• From: Seneca Coal Company
• To: DMG
• Permit Index Doc Type: Sediment Pond Inspections
• Media Type: D
• Archive: No

- PERIODIC INSPECTION FORM
Water, Sediment, or Slurry Impoundments

INSPECTOR
'S NAME: Dennis Jones ?
DATE: ~(~^~ ^~ 3
NPDES I.D . NO.: CO-0000221 D.P. 011 p
-
^~S -03
FACILITY CONFIGURATION: Cross-Valley Pond DATE LAST INSPECTION: !
SITE NAME : Pond #011 LOCATION: NE'/, SW~/„Sec . 16, T5N, R87W
MINE NAME : Yoast Mine(Seneca Coal Co) LOCATION: 8.5 mi. SE of Hayden, CO
MINE I.D. NO.: CMLRD Permit No. C-94-082 OWNER'S REP.: Gregg Kitchen, Gen Mgr
Circle or write in appropriate response
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Foundation preparation (removal of vegetation, stumps, topsoil: Yes
Lift thickness: 8 in.
Compaction according to approved plan: Yes
Burning (specify extent and location): No
Angle of slope: 3.0:1 upstream, 2.8:1 downstream Total = 5.8:1
*Seepage (specify location, color, and approximate volume)
From underdrain pipes:
At isolated points on embankment slopes:
At natural hillside:
Over widespread areas:
From downstream foundation area:
"Boils" beneath stream or ponded water:
Cracks or scarps on crest:
Cracks or scarps on slope:
Sloughing or bulging on slope:
*Major erosion problems:
Surface movements in valley bottom or on hillside:
*Erosion of toe:
*water impounded against toe:
Existing embankment freeboard: (normal = 5. 1') ryp p9c,
Increase Decrease in water level:
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
Cracks, bulging, or erosion on upstream face: Yes
Visible sumps or sinkholes in slurry surface: N/A
*Clogging
No
feet
feet
®o N/A
Spillway channels and pipes: Yes Ido N/A
Decant System: N/A
Diversion ditches: N/A
19. *Cracking or crushing of pipes
Spillway pipes: Yes ® N/A
Decant system: N/A f
20. Trash racks clear and in place: N/A p~~ qOO 41,
t k d ~wc-Q.
*Major adverse changes in these items could cause instability and should be reported to
the Engineering Manager and Mine Superintendent for further evaluation. Adverse
conditions noted in these items should normally be described (extent, location, volume,
etc.) in the space on the back of this sheet.